Box Four 2-Piece Crankset Size:160mm 38T) this makes Rennen Chainrings

38T) this makes Rennen Chainrings one of the lightest on the market

5" top tube length

Standard Bearings: Use for road bikes in dry/no salt environments

DURABLE COVER MATERIALS

integrated seat post clamp

Box Four 2-Piece Crankset Size:160mm 38T) this makes Rennen ChainringsThe Box Four Crankset features a 2 piece design with an oversized bottom bracket interface. The 24mm spindle is pressed into the drive side crank arm for durability and easy installation. The non drive side crank arm features a 2 bolt pinch system for added strength. Our unique 4 bolt 104 BCD spider features a flex resistant ring for optimum performance. Box Four Cranks feature steel pedal inserts that require pedal washers and external sealed bearing